class DongWu:
    def __init__(self):
        self.sex="雄"
    def eat(self):
        print("吃")
    def shui(self):
        print("睡觉")

class Dog(DongWu):
    def __init__(self):
        self.color="黑色"

    def jiao(self):
        print("汪汪汪")

class People(DongWu):
    def __init__(self):
        self.age=18
    def  Killgou(self):
        print("杀狗")

class Man(People):
    pass


m1=Man()
m1.eat()
m1.Killgou()







